I've just switched (1.5 12" PB, 1.256 RAM, 100 G HD) and I'm extremely happy, yet thoroughly in the dark. I do a lot of running and rowing, and I've had one interation or another of the Nike PSA mp3 player since the line debuted about 4 years ago. For Christmas, I recieved the brand new PSA250. Now, I know that an iPod Shuffle not only has more storage space, but is also smaller and cheaper. Obviously, it would also mate perfectly with my new PB. However, the supply of Shuffles leaves much to be desired, and I don't want to go tuneless for 5-7 weeks while I wait for it to arrive. I suppose I could sell the Nike, but I'd rather try to make it work with the PB than fool around with eBay. Is there any way for me to download songs onto the Nike player from my PB? It's recognized as an external flash drive, and I can transfer mp3 files onto it, but they won't play. Am I encoding the mp3s incorrectly? Is there some trick that I'm completely oblivious to? Or is there just no hope? Thanks in advance.